[1]何泉,盛昂昂,刘大龙.围护结构保温设计中非稳态计算方法适用性研究[J].西安建筑科技大学学报(自然科学版),2021,53(04):561-567.[doi:10.15986/j.1006-7930.2021.04.013]
　HE Quan,SHENG Angang,LIU Dalong.Study on the applicability of unsteady calculation method in thermal insulation design of enclosure structure in cold area[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(04):561-567.[doi:10.15986/j.1006-7930.2021.04.013]
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围护结构保温设计中非稳态计算方法适用性研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年04期
页码:
561-567
栏目:
出版日期:
2021-08-28

文章信息/Info

Title:
Study on the applicability of unsteady calculation method in thermal insulation design of enclosure structure in cold area
文章编号:
1006-7930(2021)04-0561-07
作者:
何泉; 盛昂昂; 刘大龙
(西安建筑科技大学 建筑学院,陕西 西安 710055)
Author(s):
HE Quan; SHENG Angang; LIU Dalong
(School of Architecture,Xi’an Univ. of Arch. & Tech.,Xi’an 710055,China)
关键词:
保温设计;  动态模拟;  内壁面温度;  热流;  耗热量
Keywords:
thermal insulation design;  dynamic simulation;  surface inside face temperature;  heat flux;  heat consumption
分类号:
TU111.19+5.2
DOI:
10.15986/j.1006-7930.2021.04.013
文献标志码:
A
摘要:
以寒冷地区不同太阳能资源区的城市居住建筑为研究对象,分别在太阳能富集地区选取拉萨、敦煌,次富集地区选取西安、北京,采用稳态和非稳态方法进行传热计算,分析了冬至日的逐时外墙内壁面温度和墙体热流强度的变化规律,以及建筑能耗.研究发现:在拉萨,采用两种方法计算的温度和热流差异都最大,而西安的相应差异最小.表明:在太阳能富集地区,非稳态计算的采暖能耗更低; 当室外温度逐时差值日均温度大于1.9℃时,两种方法计算耗热量的差值大于10%; 随着两者差值日均温度的增大,两种方法计算的耗热量差值呈显著增长趋势,差值最大可达60%以上.因为太阳辐射造成的室外温度波动显著,此时围护结构传热采用非稳态更为合适,与动态能耗模拟的结果更接近.
Abstract:
Taking the urban residential buildings in different solar energy resource areas in the cold area as the research object,Lhasa and Dunhuang are selected in the solar energy enrichment area,Xi’an and Beijing are selected in the sub-enrichment area,and the heat transfer is calculated by steady-state and unsteady-state methods. The variation rules of interior wall temperature and wall heat flux intensity of hourly exterior wall during the winter solstice,as well as building energy consumption are analyzed. It is found that the difference of temperature and heat flux calculated by the two methods is the largest in Lhasa,while the corresponding difference is the smallest in Xi’an. The results show that in solar energy enrichment areas,the heating energy consumption of unsteady calculation is lower; when the hourly difference of outdoor temperature is more than 1.9℃,the difference of heat consumption calculated by the two methods is more than 10%; with the increase of the daily average temperature of the difference between the two methods,the difference of heat consumption calculated by the two methods shows a significant growth trend,and the maximum difference is more than 60%. Because of the significant outdoor temperature fluctuation caused by solar radiation,the unsteady heat transfer of the enclosure structure is more suitable,which is closer to the result of dynamic energy consumption simulation.

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(编辑 桂智刚)

备注/Memo

备注/Memo:
收稿日期:2020-12-10 修改稿日期:2021-07-05
基金项目:国家自然科学基金(51878536); 陕西省自然科学基础研究计划一般项目(面上)(2019JM-505); 西部绿色建筑国家重点实验室开放研究基金项目(LSKF202017)
第一作者:何泉(1976-),女,博士、副教授,主要从事建筑气候与节能方面的研究.E-mail:76634259@qq.com
通信作者:刘大龙(1976-),男,博士、副教授,主要从事建筑气候与节能方面的研究.E-mail:cof
更新日期/Last Update: 2021-08-28